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            <h2 class="title" style="clear: both"><a id="PythonOpcodesSyntax"></a>Orchestra Syntax</h2>
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      <p>Blocks of Python code, and indeed entire scripts, can be
    embedded in Csound orchestras using the {{ and }} directives to
    enclose the script, as follows:</p>
      <pre class="programlisting">
<span class="ohdr">sr</span><span class="op">=</span>44100
<span class="ohdr">kr</span><span class="op">=</span>4410
<span class="ohdr">ksmps</span><span class="op">=</span>10
<span class="ohdr">nchnls</span><span class="op">=</span>1
<span class="opc">pyinit</span>

giSinusoid	<span class="opc">ftgen</span>	0,	0, 8192, 10,	1

<span class="opc">pyruni</span> {{
import random

pool = [(1 + i/10.0) ** 1.2 for i in range(100)]

def get_number_from_pool(n, p):
    if random.random() &lt; p:
        i = int(random.random() * len(pool))
        pool[i] = n
    return random.choice(pool)
}}

<span class="oblock">instr</span> 1
	k1	<span class="opc">oscil</span>	1, 3, giSinusoid	
	k2	<span class="opc">pycall1</span>	"get_number_from_pool", k1 <span class="op">+</span> 2, p4
		<span class="opc">printk</span>	0.01, k2
<span class="oblock">endin</span></pre>
      <h3><a id="idp86883056"></a>Credits</h3>
      <p>Copyright (c) 2002 by Maurizio Umberto Puxeddu. All rights
  reserved.</p>
      <p>Portions copyright (c) 2004 and 2005 by Michael Gogins.</p>
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